Lady Jane Grey (1536/1537 – 12 February 1554) was a claimant to the Kingdom of England and Kingdom of Ireland. She was de facto monarch of England for just over a week in 1553.
Executed on 12 February 1554, Lady Jane Grey's claimed rule of less than two weeks in July 1553 is the shortest rule of England in the history of the country. Popular history sometimes refers to Lady Jane as "The Nine Days' Queen" or, less commonly, as "The Nine Day Queen" owing to disagreements about the beginning of her claimed rule. Historians have taken either the day of her official proclamation as Queen (10 July) or that of her predecessor's death (6 July) as the beginning.
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